Typewriter frame



Ap 1931- M. GARBELL TYPEWRITER FRAME Filed Dec. 12, 1927 4 Sheets-Sheet l EH2 ESQ-RE: m

April 14, 1931. GARBELL 1,800,199

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April 14, 1931. M. GARBELL 1,800,199

TYPEWRITER FRAME Filed Dec. 12, 1927 4 Sheets-Sheet 4 Patented Apr. 14, 1 931 UNITED STATES PATENT OFFICE MAX GABBELL, OF CHICAGO, ILLINOIS, ASSIGNOR T VICTOR ADDING MACHINE OOH- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS TYZPEWRITER FRAME Application filed December 12, 1927. Serial N'o. 239,335.

My invention relates to typewriter machines and it has particular relation to the frame portions of such devices.

The advantages of my invention and the objects attained thereby may be better understood in connection with the description of the machine embodying my invention based on the accompanying drawings, in which I latter:

Figure 1 is an elevational perspective view of so much of mytypewriter as is necessary to show the frame portion thereof;

Fig. 2 is an elevational perspective view of the frame in a machine emboying m invention, with the operating portions 0 the machine stripped to more clearly disclose certain portions of said frame;

Fig. 3 is a top plan view of the rear portion of my frame, particularly showing the manner in which the segment of the machine is associated with the frame portion;

Fig. 4 is'an elevational view of an envelopeportion used in connection with my -frame; Fig. 5 is a fragmentary, elevational and 2 iectioial view takenon the line 55 of Fig.

; an x i.

Fig. 6 is another partially elevational and sectionalwiew taken through the frame and the supporting foot structure at the point 80 where one of the foot members is located.

Referrin now more particularly to the drawings, t e metallic portions of my frame member comprises a part 10 which is substaritially rectilinear and tray-like in form and has front, .back and side edges 11 rising from the bottom of the .said portion. This entire piece can be formed by stamping if desired. i The inner art or central portion ofthe bottom of said portion 10 is cut away as shown, but enough remains so that an-inner and horizontal planar part 12, in connection with theside edges 11, forms a sturdy rib portion. r This portion may be formed by stam ing, punching or drawing and because of this fact is of marked advantage so far as contributing to the economic production of typewriters embodying my frame member.

. Secured to the innerrside edges of said portion 10 are side frame pieces 13 and 14.

These parts may be secured to said portion 10 by welding, or otherwise, and may be con sidered as comprising, together with said part '10, a unitary frame portion which in and of itself is entirely capable of supporting the operating mechanism of my typewriter machine without additional reinforcement of any kind.

A key-lever comb member 15 extends across the frame and is secured to the side pieces as shown, it being understood that the key levers extend through the slots 16. This member 15 also contributes to the frame strength of my structure as do also two channel members 17 and 18; the first of said members, namely 17, may be termed a key-lever pivot member, which is provided with slotted portions 19 in which the key levers are mounted and are secured by means of a pivot wire (not shown). A more elaborate description of the structure and purpose" of said member 17 and claims to the same are contained in my copending application Serial No. 236,946, filed December 1, 1927.

The channel member 18 may be termed the unit escapement bracket supporting rib or channel, holes 20 being shown therein for the purpose of receiving said bracket. This bracket and its manner of functioning in my improved typewriting machine are more fully described and claimedin my copending application Serial No. 229,439, filed August 1, 1927.

The aforesaid members 17 and 18 are, in my preferred embodiment, although such is not entirely necessary, supported on an inwardly extending tongue 21 which extends inwardly from the rear flat portion 12 of the member 10. The said member 18 is also utilized for mountin all of the other operating assemblies which are associated with the rear portion of my machine. These members also constitute strengthening and bracing members and because of their dual function contribute markedly to the economy of production of said machine and'to the satisfactory operation thereof.

The side frame portions 13 and 14 have journal members 22 welded or otherwise secured thereto. As more fully described and 100 claimed in my copen'ding application Serial No. 229,437, filed October 28, 1927, said members '22 receive the shaft on which the carriage is mounted and about which said carriage pivotally tilts upon case shift. A lug 23 for receiving a tightening screw 24 is mounted on said portion 22. Said screw 24 is mounted in a pivoted member 25 which latter cooperates with the member 22 so that when the screw 24 is tightened a journal will be formed at each end of a shaft all as more fully described in the above mentioned copending application. A channel-shaped line-lock member 27 is also pivotally mounted in the side frames and is operated in the manner more fully described and claimed in my copending application Serial No.

a 229,436, filed October 28, 1927.

A unitary'segment member 28 is mounted between the side frames 13 and 14 through the medium of portions 29 and 30 which are cast integrally with said segment piece 28. This segment so enhances the strength of my frame that, as hereinbefore indicated, no additional reinforcing is required, and to all intents and purposes the frame portion so far described might well and can function in a completed typewriter without any additions thereto.

However, for the purpose of adding to the general appearance of my machine, I sur round the above described frame member with an envelope or cover 31, it being understood that the latter is in no sense a frame in that it supports any of the moving parts; in fact the member 31 is a four-walled affair in which side walls 32 and 33 are do signed to cover the side pieces 13 and 14, while the front part 34 is, designed to err-- tend around on the front edge 11. it back portion 35 is normally positioned to the rear of the mechanism of the machine.

The aforesaid member 31 is formed as shown and is of light metal which is springy or resilient in nature since, as heretofore indicated, the said member does not need to have a positive supporting element. Because of the springy nature of the material from which it is formed, 1 preferably place this envelope member in position about the frame member first described above by flexing the side portions 32 and 33, as indicated by the dotted line in Fig. 4, said envelope being flexible to such an extent that it may be placed about said frame after all of the operating entities have been placed in position, even to the extent that it can be flexed to pass over the machine carriage when in positlon.

The interior of said member 31 may be provided with felt or' pad portions 36 to prevent any noise between the two members. The frame proper, as above described, is set down in a tray of fiber or other material, which tray forms the bottom of a carrying case for my machine. Said tray is designated in Fig. 1 as 37 and is secured to the main frame portion at the points where the feet or rubber buttons 38 are positioned (see Fig. 6);

As shown in the elevational, sectional views, the said tray member 37 comprises an inner metal portion 39 surrounded by a fiber cover 40. Said tray is depressed in the center to receive the frame member, and moreover, as indicated, the frame portion is secured to said tray by screws 41 which hold the rubber buttons 38 in place, said screws 41 passing through into rivets 42 on the 1n,- terior or upper surface of the tray as shown. A. cushioning disk 43 of rubber or similar material is positioned between the metal part 12 and the tray 37 at each of the buttons.

It will be observed that the peripheral portions 44 of said tray may be of wood in order to lighten the bottom of the carrying case. Said tray is provided with a latch-receiving member 45 to permit placement and locking of the cover member thereon, as best described in my copending application Serial No. 68,041, filed November 9, 1925.

As hereinbefore described, my envelope member 31 is placed about the frame portion but is not mechanically secured thereto at any point, this being unnecessary because said cover does not in any way reinforce or strengthen the frame. In order, however, to shieldsome of the operating portions of the machine, the envelope member is provided with a top plate 46 which is secured to the sides 32 and 33 of the envelope, forming thereby a further covering member. The manner in which this member is associated with the remainder of the structure may be best seen in Fig. 1, from which it will be observed that said top plate is provided with depending side flanges 47 to permit of attachment'to the side wall port-ions of the envelope 31. Said top plate is also provided with a depending front wall 48 and a curved portion 49 which latter, at its center, merges with the front depending wall 48, said curved portion being continuously sweeping in effect and covering the typeheads of the typebars and the ribbon spools.

Fig. 1 also discloses sufficiently, so far as the purposes of this application are concerned, the remaining elements of an operating typewriter. A platen 50 is mounted in end frames 51 and is adapted to be spaced either by a spacing lever (not shown) or a knob 52. The end frames 51 are mounted on a carriage rail 53 which is adapted to be journaled on, and to move transversely of, a stationary rail 54, which latter is secured to a frame which is mounted to be pivotally moved about a shaft mounting 26 upon operation of a case shift key and lever 55.

While I have described but one embodiment of my invention, it is apparent that those skilled in the art may reach the same end by the employment of equivalent elements without departing from the spirit of my invention,'and I desire, therefore, that my said invention be limited only by the scope of the appended claims or the showing of the prior art.

I claim:

1. In a typewriting machine, a frame member therefor comprising a bottom tray and side walls secured to said tray, and a flexible envelope for said frame comprising a continuous wall portionand a top all of which are disposable about said to conceal the latter, without being mechanically secured to said frame, by a. flexing of the wall portion of said envelope.

2. In a typewriting machine, a frame member therefor comprising a bottom tray and side walls secured to said tray, and a flexible envelope for said frame permitting the positioning of all the movable operative parts of said machine, and the subsequent encasement of said frame by said envelope, by a flexing of the wall portion thereof to 'pass said envelope over the carriage of the machine.

3. In a typewriting machine, a frame member therefor comprising a bottom tray and side walls secured to said tray and cross members extending between said walls comprising a key-lever comb, a key-lever pivot member, a unitary typebar segment, and a further strengthening channel extending between said side walls and comprising a support for the unitary escapement bracket.

4. In a typewriting machine, a frame member therefor comprising a bottom tray and side walls secured to said tray and cross c members extending between said walls comprising a key-lever comb, a key-lever pivot member, a unitary typebar segment, and a further strengthening channel extending between said side walls and comprising a support for the unitary escapement bracket, said I tray comprising a centrally open bottom having a tongue extending toward the center of the tray and underlyin said channel and said key-lever ivot mem er.

In witness w ereof, I have hereunto subscribed my name.

. MAX GARBELL.

plate, rame 

